What, you thought you'd never have a use for your sick inversion skills outside the yoga studio? Wrong. Lie back with your legs raised above your head, and have your partner squat over you. Have him remove himself fully with every thrust—you'll love him entering you over and over again.

If You Like: CyclingTry: Man's Best Friend

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Raised butt, elongated spine, wide grip…third position or doggy style? The answer: both. Enjoy the deep penetration that comes with this position—and we apologize in advance for the mental image you'll get during your next cycling class.

If You Like: LiftingTry: The Standing Wheel Barrow

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This super-athletic position will leave your shoulders burning, so you'll be less likely to fall on your face mid-romp if you regularly pump iron. Want to add some cardio? Stroll this grown-up wheelbarrow race around the house (kidding!).

If You Like: High-Intensity Interval TrainingTry: The Spider

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With a little push, you can transition between this lounging position and girl-on-top. Just grab onto his hands, and pull yourself up into a squatting position while he lies back—then go back to the Spider. How's that for interval training?

If You Like: Barre ClassTry: The Ballet Dancer

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Yep, your barre class is helping you get sexy and lean—but it also will help you lift your leg over your partner's shoulder for this great-for-quickies standing position.

If You Like: SwimmingTry: H20hh Yeah

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Take a break from swimming laps to take advantage of your buoyancy in the water—it makes this position so much easier.

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